Cerbo GX Installation
Table Of Contents
- Cerbo GX Manual
- Table of Contents
- 1. Introduction
- 2. Installation
- 2.1. Overview of connections
- 2.2. Power
- 2.3. Connecting Victron products
- 2.3.1. Multis/Quattros/Inverters (VE.Bus products)
- 2.3.2. Battery Monitor BMV-700 series; and MPPTs with a VE.Direct port
- 2.3.3. Skylla-i, Lynx Shunt VE.Can, Lynx Ion + Shunt and MPPTs with a VE.Can port
- 2.3.4. VE.Can and BMS-Can Interfaces
- 2.3.5. BMV-600 series
- 2.3.6. DC Link box
- 2.3.7. VE.Can Resistive Tank Sender Adapter
- 2.4. Connecting a PV Inverter
- 2.5. Connecting a USB GPS
- 2.6. Connecting a Fischer Panda Generator
- 2.7. Connecting Tank Level Sensors
- 2.8. Connecting third-party NMEA 2000 tank senders
- 2.9. Connecting Temperature Sensors
- 2.10. Connecting IMT Solar Irradiance, Temperature and Wind Speed Sensors
- 3. Internet connectivity
- 3.1. Ethernet LAN port
- 3.2. Wi-Fi
- 3.3. GX GSM
- 3.4. Mobile (cellular) network using a 3G or 4G router
- 3.5. USB tethering using a mobile phone
- 3.6. IP Configuration
- 3.7. Connecting both Ethernet and Wi-Fi (failover)
- 3.8. Minimize internet traffic
- 3.9. More information about setting up an internet connection and VRM
- 4. Accessing the GX device
- 5. Configuration
- 6. GX - How to update firmware
- 7. VE.Bus Inverter/charger monitoring
- 8. DVCC - Distributed Voltage and Current Control
- 9. VRM Portal
- 10. Marine MFD integration by App
- 11. Marine MFD integration by NMEA2000
- 12. Digital Inputs
- 13. GX - Generator auto start/stop
- 14. Error Codes
- 15. FAQ
- 15.1. Q1: I cannot switch my Multi/Quattro system on or off
- 15.2. Q2: Do I need a BMV to see proper battery state of charge?
- 15.3. Q3: I have no internet, where can I insert a sim-card?
- 15.4. Q4: Can I connect both a GX Device and a VGR2/VER to a Multi/Inverter/Quattro?
- 15.5. Q5: Can I connect multiple Cerbo GX to a Multi/Inverter/Quattro?
- 15.6. Q6: I see incorrect current (amps) or power readings on my Cerbo GX
- 15.7. Q7: There is a menu entry named "Multi" instead of the VE.Bus product name
- 15.8. Q8: There is a menu entry named "Multi", while there is no Inverter, Multi or Quattro connected
- 15.9. Q9: When I type the ip-address of the Cerbo GX into my browser, I see a web page mentioning Hiawatha?
- 15.10. Q10: I have multiple Solar chargers MPPT 150/70 running in parallel. From which one will I see the relay status in the Cerbo GX menu?
- 15.11. Q11: How long should an automatic update take?
- 15.12. Q12: I have a VGR with IO Extender, how can I replace this with a Cerbo GX?
- 15.13. Q13: Can I use Remote VEConfigure, as I was doing with the VGR2?
- 15.14. Q14: The Blue Power Panel could be powered through the VE.Net network, can I also do that with a Cerbo GX?
- 15.15. Q15: What type of networking is used by the Cerbo GX (TCP and UDP ports)?
- 15.16. Q16: What is the functionality behind the menu item Remote support (SSH), in the Ethernet menu?
- 15.17. Q17: I don’t see support for VE.Net products in the list, is that still coming?
- 15.18. Q18: What is the data usage of the Cerbo GX?
- 15.19. Q19: How many AC Current Sensors can I connect in one VE.Bus system?
- 15.20. Q20: Issues with Multi not starting when Cerbo GX is connected / Caution when powering the Cerbo GX from the AC-out terminal of a VE.Bus Inverter, Multi or Quattro
- 15.21. Q21: I love Linux, programming, Victron and the Cerbo GX. Can I do more?
- 15.22. Q22: How do I change the logo
- 15.23. Q23: Multi restarts all the time (after every 10sec)
- 15.24. Q24: What is Error #42?
- 15.25. GPL Note
- 16. More information
For 12 V battery banks/systems the IMT Si-RS485 series solar irradiance sensor range may be powered directly from the battery
bank and will continue to operate down to minimum voltage of 10.5 V (as measured at the sensor, account for voltage drop in the
cable).
For detailed wiring/installation notes and specifications refer to the IMT Si-RS485 series solar irradiance sensor 'Quick Reference
Guide' and Victron RS485 to USB interface cable ‘Datasheet’.
To ensure signal integrity and robust operation, particularly ensure that;
• Extension cabling complies with the minimum cross-sectional area specifications in the related table - dependent on DC supply
voltage and cable length
• Extension cabling has appropriate shielding and twisted pair cores
• The original cable attached to the Victron RS485 to USB interface is reduced to a maximum length of 20cm in installations
where the total cable length is over 10m or there are installation/site specific interference issues – in this case appropriate/high
quality cabling should be used for the entire cable length, rather than only for the extension length
• Cabling is installed separated/away from the main DC or AC power cabling
• All wiring is properly terminated (including unused wires) and properly isolated from weather/water ingress
• The sensor housing is not opened or tampered with during installation - as sealing integrity will be compromised (and warranty
void)
The IMT Si-RS485TC series solar irradiance sensor includes internal Galvanic Isolation (up to 1000V) between power supply and
RS485 Modbus circuits, accordingly the non-isolated Victron RS485 to USB interface is suitable for most installations.
However, if an isolated RS485 to USB interface is preferred the only compatible device is Hjelmslund Electronics USB485-
STIXL (any others type will not be recognised by the GX device).
Multiple Sensors
It is possible to connect multiple IMT Si-RS485 series solar irradiance sensors to a common Victron GX device, however a
dedicated Victron RS485 to USB interface is required for each individual unit.
Multiple units cannot be combined on a single interface (as this is not supported by the related Venus OS software).
Configuration
There is normally no need for any special/additional configuration – the default ‘as shipped’ configuration is compatible for
communication with a Victron GX device.
However, in cases where the IMT Si-RS485 series solar irradiance sensor has been previously used in another system and/or the
settings changed for any reason, it is necessary to restore the default configuration before further use.
To revise the configuration, download the IMT 'Si-MODBUS-Configuration software tool'. Follow the instructions in the IMT ‘Si
Modbus Configurator Documentation’. and check/update the following settings:
• MODBUS Address: 1
• Baud Rate: 9600
• Data Format: 8N1 (10 Bit)
For further support related to configuration of the IMT Si-RS485 Series irradiance sensors please contact IMT Solar directly.
User Interface - GX Device
Upon connection to the Victron GX device and power up the IMT Si-RS485 Series irradiance sensor will be automatically
detected within a few minutes and appear in the 'Device List' menu.
Cerbo GX Manual
Page 10 Installation